[release] bump version to RC3
[Confluence] Use 'shutdown function' setting in 'custom shutdown timer'. fixes #12848
Merge pull request #2017 from ronie/confluence-shutdown

[Confluence] Use 'shutdown function' setting in 'custom shutdown timer'. fixes #12848
Merge pull request #2010 from MartijnKaijser/version_bump_rc3

[release] bump version to RC3
parse id3v1 tags of mp3 files
compilations node in the music library returned all albums, rather than just compilation albums. fixes #13825 #13825. Thanks to Xycl.
[rbp/omxplayer] fixed subtitle display time. fixes #13861
don't allow a job with id 0 (will be used for invalid job id)
if the job manager isn't running, don't add new jobs
progress control with reveal set to true didn't update correctly with dirty regions set to 1. fixes #13887
use a helper function to retrieve the CPluginDirectory instance from the handle, thanks to ulion
use a map instead of a vector for holding plugin handles - ensures that we don't attempt to access the wrong one if an earlier handle was removed. Thanks to ulion for finding the issue
adds missing NULL check in CPluginDirectory::SetSetting